Elanket



Aug. l?, 1943.

BLANKET Filed sept. 24, 1942l INVENTOR.

Afro/@Nar J; M LURIE 2,327,278

tion; ond Fie. 2

acetic and tartaric acids.

sito

. l sisters v l Ehi-HMT l ll/i. Loria hesriotom Maine, essigisor to tlm drittes' tloihpeiim Lewiston, ltileim A, o eor=- .dppticstiom 2d, mi2, Series No. 45Std?? il (Clt. o)

This investies. to

The object oi the ihvehtiori is to produce a hovel sind superior woven hlahlret utilising cot-tori thread the weit threes ci the hlaioiiet composed of cotton oi the softer type such as American or settori end which has the deu sira'ble harsh ond wiry feeling of a hlarilzet rhode of Chios cotton, together with the ability to se toiri this chorecteristic harsh sshd vriry ieelihe ior loog periods oi time, everi when subjected to rioholhalihe efsshiris, to otmospheric chooses, and to other hits-cao conditions. f

With geherol object view ood such others os moy hereinafter oppeor. the ihvehtioh consists ih the woven blsolset hereinafter de scribed arid particolerly dehhed lo. the claim at the end ci specihcatioo.

lo. the dreudhg illustrating the preferred ehibodimeht of the ihvehtioh, Iig. l is e, secticri through a Woven blanket embodying the lovenis a detail to he referred toa Referring how to the drawing, i@ represents the Warp threods arid it represents the weft threads of a woven hlahlret embodying the irivehtiori. hi accordohce with the invention. the weit threads i@ comprise cotton threads of the normally soit type of American and iodio cottori which have been treoted to deposit thereon so. scid form or eri emphoteric proteiri it sind by which such soi-"t cotton. fibers ore converted into e condition. having si why, harsh reeling ood the general worlisbility of @hina cottori. This coarse, Wiry cotton Weit thread imparts to the blanket the eppeoroiice and feel of a blanket made or Chios cottori.

it hos heretofore been recognized that a cere todo. eiiioiu'it of scroop could he imported to cer-I tain fibers arid iibrous msterisis by treatment with dilute acetic and tartaric acids. Sillr is the materiel which has been. most susceptible to such treatment and the scroop ot sills, that is, the property of emitting,a e craclrlihs sound when squeezed or pressed, hos been se'oerolly recoge hized as probably due to on acid herdening ci the surface of the fibers themselves, and not as an inherent property of the sills. it has also been recognised that mercerzed cotton can, to some extent, have imported to ita somewhat similar scroop by similar treatment by dilute Wool, tosome desree, can also be given o scroop by treatment with chloride of lime solution or with strong caustic alkali, but with the exception of sills, none of the various processes, heretofore proposed for the treatment of bers other than sills,

Y the weft threads l2 have assumed commercial importance at most, the scroop has been more or less temporary.

l have discovered that s desirable harsh,

'reeling may he imported to soft bers such es American and .iodio cottoh, carded rayon ood other .bers by a process involving the deposi-= tion, upon the ilbers, of certain proteins such casein, alpha protein, soya bean protein ood others of the type which are amphoteric. practice, by saturotihg the cotton fibers, by dipping. with s, solution of the protein, end their subjecting the some to treatment to effect the deposition of the protein in acid form upon. the bers, and drying without washing, there is pro duced a resulting modied cotton possessing the desired harsh, wiry reeling. The modified cotton bers may be processed in the usual marmer to produce cotton threods and the latter utilized as in producing the present woven blanket. The warp threads l@ may coiri= prise any desired character or thread inasmuch as the lling thread is the one which imports the desired character to the Woven blanket. in practice I prefer to utilize ordinary American cotton threads as the warp threads it.

In general, several procedures may be' followed. The preferred procedure 'may be described as follows: I prepare a solution of one hundred (100)- parts by Weight of the proteinL dissoivecl in a caustic solution comprising three (3) parts by Weight oicaustic dissolved in five hundred (500) parts hy weight of Water. I their odd eighteen 18) parts by Weight ci sodium acid phosphate Nailspi dissolved in some water. The resulting protein solution has a pli value of approximately 5.5, arid to this is added twenty (20) parts by Weight of formalin solution end The protein in this solution appears to be in. the form of a. colloidal suspension. The American or India cotton is then dipped in this solution Aand dried without Washing ang during. the dry- I tem, soya bean protein and others of the ampho terc type from which an acid form of protein may be precipitated from a very slightly acid solu After the cotton has been thus immersed 1n the protein solution, the excess of the solution may be squeezed out and then the cotton subjected to the action of a solution of a weak acid such as acetic, lactic or citric acids to thereby precipitate the protein from a slightly acid solution directly upon the fibers, after which the cotton thus treated is dried without washing. Both of the foregoing processes may be carried out at room temperatures and have the advantage that certain dyed fabrics can be treated without injury to the dye.

Stili another procedure contemplates the immersion of the cotton bers in a weak sulphurous fiber, the ber may be subjected to treatment with' a weak formaldehyde solution as a part of the precipitating bath to improve the resistance of the treated fiber to washing, and either with or without the formaldehyde treatment, it has been found that the deposition of the acid form of a the desired wiry, `harsh feeling when processed.

and woven as weft threads in the production of the present blanket, exhibit a relatively permanent ability to withstand nonalkaline washing, atmospheric changes, and other human conditions while retaining the properties of China cotton, and as a result blankets embodying the present invention satisfactorily serve all of the commercial purposes heretofore served by blankets produced with China cotton.

Having thus described the invention, claimed is:

A woven blanket having the weft threads thereof composed of modied cotton having the bers thereof in a loose condition, said fibers having deposited thereon an acid form of an amphoteric protein whereby to convert them from their normally soft condition to a condition having the wiry, harsh feeling and general workability of China cotton, said Wiry cotton weft threads imparting to the blanket the Wiry feeling and characteristics of a blanket made of China cotton.

JOSEPH M. LURIE.

what it 

